genode/repos/base/mk/dep_lib.mk

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#
# This file determines dependencies of a library from other libraries
#
# The following variables must be defined by the caller:
#
# VERBOSE - controls the make verboseness
# VERBOSE_DIR - verboseness of directory change messages
# VERBOSE_MK - verboseness of make calls
# REPOSITORIES - source code repositories to use
# BASE_DIR - base directory of build system repository
# TARGET_DIR - target build directory
# BUILD_BASE_DIR - build directory with build config
# LIB_CACHE_DIR - destination directory for object files
# LIB_PROGRESS_LOG - library build log file
# BUILD_LIBS - list of libraries to build (without .lib.a or .lib.so suffix)
# INSTALL_DIR - destination directory for installing shared libraries
# DEBUG_DIR - destination directory for installing unstripped shared libraries
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#
ACCUMULATE_MISSING_PORTS = 1
#
# Include common utility functions
#
include $(BASE_DIR)/mk/util.inc
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#
# Generate dependencies only for those libs that are
# not already contained in the library build log
#
include $(LIB_PROGRESS_LOG)
ifneq ($(filter $(LIB),$(LIBS_READY)),)
already_visited:
@true
else
all: append_lib_to_progress_log
endif
append_lib_to_progress_log:
@echo "LIBS_READY += $(LIB)" >> $(LIB_PROGRESS_LOG)
LIB_MK_DIRS = $(foreach REP,$(REPOSITORIES),$(addprefix $(REP)/lib/mk/spec/, $(SPECS)) $(REP)/lib/mk)
SYMBOLS_DIRS = $(foreach REP,$(REPOSITORIES),$(addprefix $(REP)/lib/symbols/spec/,$(SPECS)) $(REP)/lib/symbols)
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#
# Of all possible file locations, use the (first) one that actually exist.
#
LIB_MK = $(firstword $(wildcard $(addsuffix /$(LIB).mk,$(LIB_MK_DIRS))))
SYMBOLS = $(firstword $(wildcard $(addsuffix /$(LIB), $(SYMBOLS_DIRS))))
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ifneq ($(SYMBOLS),)
SHARED_LIB := yes
endif
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#
# Sanity check to detect missing library-description file
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#
ifeq ($(sort $(LIB_MK) $(SYMBOLS)),)
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all: warn_missing_lib_mk
else
all: check_unsatisfied_requirements
endif
warn_missing_lib_mk: generate_lib_rule_for_defect_library
@$(ECHO) "Library-description file $(DARK_COL)$(LIB).mk$(DEFAULT_COL) is missing"
#
# Determine the repository base directory from the absolute pathname
# of the choosen libname.mk file. We need to specify the override
# command because REP_DIR was first set by prg.mk when building a
# program target. The repository of a library could be a different
# one.
#
# Finally, we strip the trailing slash from the path. The slash was
# used to match the whole directory in 'findstring'.
#
override REP_DIR := $(firstword $(foreach REP,$(REPOSITORIES),$(findstring $(REP)/,$(LIB_MK))))
override REP_DIR := $(REP_DIR:/=)
include $(BASE_DIR)/mk/base-libs.mk
include $(LIB_MK)
ifdef SHARED_LIB
LIBS += ldso_so_support
# record creation of shared library build artifact
append_artifact_to_progress_log:
@echo -e "\n# Build artifact $(LIB).lib.so\n" >> $(LIB_PROGRESS_LOG)
append_lib_to_progress_log: append_artifact_to_progress_log
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endif
#
# Hide archive dependencies of shared libraries from users of the shared
# library. Library users examine the 'DEP_A_<lib>' variable to determine
# transitive dependencies. For shared libraries, this variable remains
# undefined.
#
ifdef SHARED_LIB
DEP_A_VAR_NAME := PRIVATE_DEP_A_$(LIB)
DEP_SO_VAR_NAME := PRIVATE_DEP_SO_$(LIB)
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else
DEP_A_VAR_NAME := DEP_A_$(LIB)
DEP_SO_VAR_NAME := DEP_SO_$(LIB)
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endif
#
# Check if the requirements of the target are satisfied
#
UNSATISFIED_REQUIREMENTS = $(filter-out $(SPECS),$(REQUIRES))
ifneq ($(UNSATISFIED_REQUIREMENTS),)
check_unsatisfied_requirements: warn_unsatisfied_requirements
else
check_unsatisfied_requirements: generate_lib_rule
endif
warn_unsatisfied_requirements: generate_lib_rule_for_defect_library
@$(ECHO) "Skip library $(LIB) because it requires $(DARK_COL)$(UNSATISFIED_REQUIREMENTS)$(DEFAULT_COL)"
generate_lib_rule_for_defect_library:
@echo "INVALID_DEPS += $(LIB)" >> $(LIB_DEP_FILE)
@echo "" >> $(LIB_DEP_FILE)
LIBS_TO_VISIT = $(filter-out $(LIBS_READY),$(LIBS))
generate_lib_rule:
ifneq ($(DEP_MISSING_PORTS),)
@(echo "MISSING_PORTS += $(DEP_MISSING_PORTS)"; \
echo "") >> $(LIB_DEP_FILE)
endif
@for i in $(LIBS_TO_VISIT); do \
$(MAKE) $(VERBOSE_DIR) -f $(BASE_DIR)/mk/dep_lib.mk REP_DIR=$(REP_DIR) LIB=$$i; done
ifneq ($(LIBS),)
@(echo "$(DEP_A_VAR_NAME) = $(foreach l,$(LIBS),\$${ARCHIVE_NAME($l)} \$$(DEP_A_$l))"; \
echo "$(DEP_SO_VAR_NAME) = $(foreach l,$(LIBS),\$${SO_NAME($l)} \$$(DEP_SO_$l))"; \
echo "") >> $(LIB_DEP_FILE)
endif
@(echo "$(LIB).lib: check_ports $(addsuffix .lib,$(LIBS))"; \
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echo " @\$$(MKDIR) -p \$$(LIB_CACHE_DIR)/$(LIB)"; \
echo " \$$(VERBOSE_MK)\$$(MAKE) $(VERBOSE_DIR) -C \$$(LIB_CACHE_DIR)/$(LIB) -f \$$(BASE_DIR)/mk/lib.mk \\"; \
echo " REP_DIR=$(REP_DIR) \\"; \
echo " LIB_MK=$(LIB_MK) \\"; \
echo " SYMBOLS=$(SYMBOLS) \\"; \
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echo " LIB=$(LIB) \\"; \
echo " ARCHIVES=\"\$$(sort \$$($(DEP_A_VAR_NAME)))\" \\"; \
echo " SHARED_LIBS=\"\$$(sort \$$($(DEP_SO_VAR_NAME)))\" \\"; \
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echo " BUILD_BASE_DIR=$(BUILD_BASE_DIR) \\"; \
echo " SHELL=$(SHELL) \\"; \
echo " INSTALL_DIR=\$$(INSTALL_DIR) \\"; \
echo " DEBUG_DIR=\$$(DEBUG_DIR)"; \
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echo "") >> $(LIB_DEP_FILE)
ifdef SHARED_LIB
@(echo "SO_NAME($(LIB)) := $(LIB).lib.so"; \
echo "") >> $(LIB_DEP_FILE)
else
@(echo "ARCHIVE_NAME($(LIB)) := $(LIB).lib.a"; \
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echo "") >> $(LIB_DEP_FILE)
endif